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arXiv · 2505.04237

Robust Speech Recognition with Schr\"odinger Bridge-Based Speech Enhancement

Rauf Nasretdinov·Roman Korostik·Ante Jukić
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Abstract

In this work, we investigate application of generative speech enhancement to improve the robustness of ASR models in noisy and reverberant conditions. We employ a recently-proposed speech enhancement model based on Schr\"odinger bridge, which has been shown to perform well compared to diffusion-based approaches. We analyze the impact of model scaling and different sampling methods on the ASR performance. Furthermore, we compare the considered model with predictive and diffusion-based baselines and analyze the speech recognition performance when using different pre-trained ASR models. The proposed approach significantly reduces the word error rate, reducing it by approximately 40% relative to the unprocessed speech signals and by approximately 8% relative to a similarly sized predictive approach.

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Rauf Nasretdinov, Roman Korostik, Ante Jukić. 2025-05-07. Robust Speech Recognition with Schr\"odinger Bridge-Based Speech Enhancement. https://doi.org/10.1109/icassp49660.2025.10890638

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